Error: Could not set 'present' on ensure: Network is unreachable - connect(2) at 11:/var/tmp/packstack/0bdee314743c407f967334fcdaca2a83/modules/packstack/manifests/provision/glance.pp
You will find full trace in log /var/tmp/packstack/20170525-104431-uJFa8g/manifests/MYIP_ADDRESS_controller.pp.log
Please check log file /var/tmp/packstack/20170525-104431-uJFa8g/openstack-setup.log for more information

Additional information:

A new answerfile was created in: /root/packstack-answers-20170525-104432.txt

Time synchronization installation was skipped. Please note that unsynchronized time on server instances might be problem for some OpenStack components.

File /root/keystonerc_admin has been created on OpenStack client host MYIP_ADDRESS. To use the command line tools you need to source the file.

To access the OpenStack Dashboard browse to http://MYIP_ADDRESS/dashboard .
Please, find your login credentials stored in the keystonerc_admin in your home directory.

Error messages; messages that could be related to "network unreachable". Judging from the messages you have posted, the error happens when glance is provisioned, so this is another detail you may want to look for. Note finally that two log files are mentioned.